Justification:
The extent of occurrence (EOO) of this speciescovers less than 5,620 km2. This geographic range is severely fragmented and undergoing continuing decline in area, extent and quality of habitat. Based on these premises, the species is listed as Vulnerable.

This species is endemic to the island of Madagascar where it is known in the regions of the Ankarana, Analamerana, Andavakoera ans Andrafiamena (Rasoloarison et al. 2000, Louis et al. 2006). The Microcebus in the Andrafiamena Mountains and the Andavakoera Classified Forest are currently assigned to this species, as is the form in Montagne d’Ambre National Park although this requires further investigation. The species could occur in additional fragments in the north, including for example, Montagne d'Frances. It ranges from 20-250 m (Mittermeier et al. 2008 and references therein). The extent of occurrence (EOO) is estimated less than 5,600 km2.

This species inhabits tropical dry deciduous and gallery forest habitats within the Ankarana Special Reserve, which also includes deep canyons sporting limestone pinnacles and cliffs referred to as tsingy. Possibly also present in tropical lowland/montane forest if records of the species in Montagne d'Ambre are this species (Mittermeier et al., 2008). Basic aspects of this species’ ecology and behaviour remain to be studied.

This species is listed on Appendix I of CITES. At present, it is reported from two special reserves (Analamerana and Ankarana), but its presence is also probable in the connecting forests of Andrafiamena and Andavakoera to the south, and possible in the Montagne d’Ambre region to the north. No specimens are reported in captivity at this time (ISIS 2009). Further field surveys and genetic studies of mouse lemur populations are needed within this broader region.